Mowing-machine.



PATENTED, AUG 30, 1904 No. 769,133. v

I R. E. GRANT.

M OWING MACHINE. APPLICATION FILED Sic-P112, 1903.

N0 MODEL.

UNITED STATES I Patented August 30, 1904.

PATENT OFFICE.

ROBERT E. GRANT, OF GRAND RAPIDS, MICHIGAN, ASSIGNOR OF ONE- HALF TO J OHNA. CAVANAUGI-I, OF GRAND RAPIDS, MICHIGAN.

MOWlNG-MACHINE.

SPECIFICATION forming part of Letters Iatent N0. 769,133, dated August 30, 1904.

Application filed September 12, 1903- Serial No. 173,001. (No model.)

To all whom it may concern.-

Be it known that I, ROBERT E. GRANT, a citizen of the United States, residing at Grand Rapids, in the county of Kent. and State of Michigan, have invented certain new and useful Improvements in Mowing-Machines, of which the following is a specification.

My invention relates to improvements in the manner of securing the sections or cutters to the cutter-bar of mowing and reaping machines; and its objects are, first, to provide for readily and easily removing and replacing the sections without removing the cutter-bar, and, second, to, avert thedanger of the sections becoming loose upon the cutter-bar.

I attain these objects by the mechanism illustrated in the accompanying drawings, in which Figure 1 is a top plan of a piece of a cutterbar with sections attached. Fig. 2 is a back elevation of the same. Fig. 3 is a top plan of the same with a modified form of boltand clamp. Fig. t is a back elevation of the same.

Similar letters refer to similar parts throughoutthe several views.-

In the accompanying drawings, A represents the cutt1ng-sect1ons, and C represents a plece of the cutter-bar. For'the purpose of securing 'the'section A to the cutter-bar C, I form a countersunk opening in the section and provide a washer B correspondingly beveled to fit. into the countersunk orbeveled opening. I prefer in all cases that the back portion of the apertures be left open, whether around washer B or a square washer B be used, so that there will be no trouble in prying the washers out when removing them. To hold the sections from becoming loose upon the bar by reason of the reciprocating motion of the barand the resistance of the grass or grain being out, I secure two "pins E into the.

bar for eachsection, the projecting ends of which are to pass through and lit closely into apertures in the sections, as shown.

only drawn solidly upon the bar, but are held absolutely safe from an oscillating motion thereon and are as firmly seated thereon as by the ordinary form of riveting, with the advantage that they may be easily and readily removed and replaced either singly or in groups without the danger of bending and distorting the bar or removing it from the machlne, as is necessary where the sect1ons are riveted fast to the bar. I

I show two forms of boltheadsa square projecting head D, as in Figs. 1 and 2, to be manipulated by a wrench, and a flat countersunk head D, having screw-slots, as shown in Figs. 3 and 4, either of which may be used successfully, the former being desirable, for thereason that it can be screwed down much more securely with a wrench than the latter can with a screw-driver, while the latter issomewhat better, for the reason that it does not project above the surface of the section. The germ of my invention, however, lies in the combination of the retaining-pins E, the beveled washer B, and the bolt D, though the bolt and pins may be used without the washer without materially departing from my invention; but I greatly prefer the use of all .three elements, as I find them much more satisfactory for properly securing the sections.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is

In combination with the cutter-bar of a mowing machine, rivets securely attached thereto and projecting from the upper surface, a series of sections each section having apertures engaged by two of said rivets, and a ing end, substantially as and for the purpose central circular countersunk aperture open set forth. 10 at the back, a circular beveled Washer fitted Signed at Grand Rapids, Michigan, Sepinto said central aperture and a square surface ternber 9, 1903.

formed at the back corresponding with the ROBERT E.-G1\.AN'1. open portion of the aperture, bolts passing In presence ofthrough said washers and screwed through EDWARD L. GoUsn,

the cutter-bar, and a jam-nut on the project- I. J. OILLEY. 

